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Reduction in Supersonic Jet Noise from a Laval Nozzle available in Various Industry and Development of a High Efficiency Nozzle

Research Project

Project/Area Number 16560148
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionThe University of Kitakyushu (2006)
Kyushu University (2004-2005)

Principal Investigator

MIYAZATO Yoshiaki  The University of Kitakyusyu, Faculty of Environmental Engineering, Associate Professor, 国際環境工学部, 助教授 (30253537)

Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsLaval nozzle / Supersonic jet / Noise reduction technique / Screech tone / Pitot pressure / Nozzle lip / Schlieren method / 超音波噴流 / 騒音低減法 / 超音速噴流騒音 / 全音圧レベル
Research Abstract

The present paper describes the experimental investigations on reduction in supersonic jet noise from a Laval nozzle available in various industry and development of a high efficiency nozzle. A design Mach number of the nozzle is 2.0 with the throat diameter of 20mm and the nozzle exit diameter of 26mm. The experiments have been conducted over a range of nozzle pressure ratios from 2.0 to 18.0 including the overexpanded and the underexpanded jets. The measurements were conducted in an anechoic room providing a free-field environment. Schlieren technique was used as the tool to study qualitatively the shock wave patterns which are primarily responsible for screech tones. The effect of the nozzle-lip thickness on screech tones has been investigated experimentally. As a result, for the nozzle-lip thickness below one nozzle exit diameter, the screech tone amplitude at the overexpanded condition increases with increasing the nozzle-lip thickness, and the jet oscillation mode changes from ax … More isymmetric to spiral or flapping, while for the nozzle-lip thickness beyond the two nozzle exit diameter, the screech tone amplitude decreases with increasing the nozzle-lip thickness. Two new techniques on supersonic jet noise reduction are proposed, one is the method by a cross-wire which is composed of long cylinders with a very small diameter and its location is varied in the jet axis direction in the supersonic jet stream, the other a mesh screen which is long stainless wires with a very small diameter. The cross-wire is significantly affects the jet structure. Schlieren photographs show that the cross-wire destroys the shock cell structure and weakens the strength. Therefore, the wire reduces the amplitude of screech tones. The mesh screen is perpendicularly placed at the nozzle exit plane and the hole is perforated in the central part of the screen to perturb the initial jet shear layer. The mesh screen leads to a substantial suppression of jet screech tones and the over all sound pressure level. The hole size is an important factor in reducing the supersonic jet noise. Less

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (33 results)

All 2006 2005 2004

All Journal Article (33 results)

  • [Journal Article] An Experimental Study of the Nozzle Lip Thickness Effect on Supersonic Jet Screech Tones2006

    • Author(s)
      Aoki, T. et al.
    • Journal Title

      J. Mechanical Science and Technology 20

      Pages: 522-532

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Experimental Investigation of Nozzle Exit Reflector Effect on Supersonic Jet2006

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Shock Waves 15

      Pages: 229-239

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Control of Supersonic Jet Noise Using a Wire Device2006

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      J. Sound and Vibration 297

      Pages: 167-182

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Control of Supersonic Jet Noise Using a Mesh Screen2006

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proc. of the 13^<Th> International Congress on Sound and Vibration (CD-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Control of Supersonic Jet Noise Using a Mesh Screen2006

    • Author(s)
      Kweon, Y.H., Lim, C.M.Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 13th International Congress on Sound and Vibration (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An Experimental Study of the Nozzle-Lip Thickness Effect on Supersonic Jet Screech Tones2006

    • Author(s)
      Aoki, T., Kweon, Y.H., Miyazato, Y., Kim, H.D., Setoguchi, T.
    • Journal Title

      J. Mechanical Science and Technology Vo1.20,No.4

      Pages: 522-532

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Experimental Investigation of Nozzle Exit Reflector Effect on Supersonic Jet2006

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Shock Waves Vol.15

      Pages: 220-239

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Control of Supersonic Jet Noise Using a Wire Device2006

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      J. Sound and Vibration Vol.297

      Pages: 167-182

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An Experimental Study of the Nozzle Lip Thickness Effect on Supersonic Jet Screech Tones2006

    • Author(s)
      Aoki, T. et al.
    • Journal Title

      J. Mechanical Science and Technology 20・4

      Pages: 522-532

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Control of Supersonic Jet Noise using a Wire Device2006

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      J. Sound and Vibration 297

      Pages: 167-182

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Control of Supersonic Jet Noise using a Mesh Screen2006

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proc. 13^<th> International Congress on Sound and Vibration (CD-ROM)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The Effect of Reflector with Sound-Absorbing Material on Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      J. Thermal Science 14

      Pages: 22-27

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Effect of a Cross Wire Device on Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      AIAA Paper 2005-2891(CD-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A New Control Technique of the Supersonic Jet Using a Wire Device2005

    • Author(s)
      Kweon, Y.H., Lim, C.M., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 6th KSME-JSME Thermal Fluid Engineering Conference (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Effect of a Cross Wire Device in Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      AIAApaper No.2005-2891, (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Effect of a Reflector Size on the Flow-Field in Supersonic Jet2005

    • Author(s)
      Kweon, Y.H.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 8th International Symposium on Fluid Control, Measurement and Visualization (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of Sound-Absorbing Materials on the Characteristics of Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.H., Tsuchida, Y., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 7th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of Reflector on the Flow Features of Supersonic Jet2005

    • Author(s)
      Kweon, Y.H, Nishiyama, Y., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 7th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Effect of Reflector with Sound-Absorbing Material on Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H., Tsuchida, M., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      J. Thermal Science Vo1.14,No.1

      Pages: 22-27

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The Effect of Reflector with Sound-Absorbing Material on Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Journal of Thermal Sciences 14・1

      Pages: 22-27

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A New Control Technique of the Supersonic Jet Noise using a Wire Device2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proceedings of the 6^<th> KSME-JSME Thermal Fluid Engineering Conference (CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Effect of a Cross Wire Device on Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      AIAA Paper 2005・2891(CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Effect of a Reflector Size on the Flow-Field in Supersonic Jet2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proceedings of the 8^<th> International Symposium on Fluid Control, Measurement and Visualization (CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Effect of Sound-Absorbing Materials on the Characteristics of Supersonic Jet Noise2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proceedings of the 7^<th> Experimental and Computational Aerothermodynamics of Internal Flows (CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Effect of Reflector on the Flow Features of Supersonic Jet2005

    • Author(s)
      Kweon, Y.H.et al.
    • Journal Title

      Proceedings of the 7^<th> Experimental and Computational Aerothermodynamics of Internal Flows (CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Effect of Nozzle Lip Thickness on Screech Tones Radiated from a Convergent-Divergent Nozzle2004

    • Author(s)
      Kweon, Y.H., Aoki, T., Miyazato, Y., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 15th International Symposium on Transport Phenomena (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An Experimental Study of the Supersonic Jet Noise Reduction Using a Wire Device2004

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Lim, C.M.
    • Journal Title

      Proc. of the 11th International Congress on Sound and Vibration (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Experimental Investigation on Supersonic Jet Noise from Convergent-Divergent Nozzle2004

    • Author(s)
      Miyazato, Y., Aoki, T., Kondoh, N., Masuda, M., Kweon, Y.H., Kim, H.D., Setoguchi, T., Matsuo, K.
    • Journal Title

      Proc. of the 24th International Shock Wave Symposium (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Jet Noise Reduction by a Cross Wire Device in Supersonic Jet Issuing from a Convergent-Divergent Nozzle2004

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proc. of the 11th International Symposium on Flow Visualization (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of Nozzle-Lip Thickness on Screech Tones Radiated form a Convergent-Divergent Nozzle2004

    • Author(s)
      Kweon, Y.H., Aoki, T., Miyazato, Y., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proceedings of the 15^<th> International Symposium on Transport Phenomena (CD-ROM)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] An Experimental Study of the Supersonic Jet Noise Reduction using a Wire Device2004

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Lim, C.M.
    • Journal Title

      Proceedings of the 11^<th> International Congress on Sound and Vibration (CD-ROM)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Experimental Investigation on Supersonic Jet Noise from Convergent-Divergent Nozzles2004

    • Author(s)
      Miyazato, Y., Aoki, T., et al.
    • Journal Title

      Proceedings of the 24^<th> International Shock Wave Symposium (CD-ROM)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Jet Noise Reduction by a Cross Wire Device in Supersonic Jet Issuing from a Convergent-Divergent Nozzle2004

    • Author(s)
      Kweon, Y.H., Miyazato, Y., Aoki, T., Kim, H.D., Setoguchi, T.
    • Journal Title

      Proceedings of the 11^<th> International Symposium on Flow Visualization (CD-ROM)

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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